Michael Slater. 8 / First ECL Microprocessor, A GUIDE TO RISC MICROPROCESSORS (google) (angol nyelven), San Diego, Calif.: Academic Press Inc., 63–64. o. [1992]. ISBN 0-12-649140-2 „BIT has been selling similar floating-point chips for use in a variety of high-performance CPUs, including Apollo's PRISM and HP's Precision Architecture”
